Houseplant Sticky Stakes Instructions For use with potted plants. Controls Whitefly, Fungus, Gnats, Blackfly, Thrips, Midges and Other Flying Insects 1. Bend the flaps of the pointed end of the strips as shown. This will make it easier to inset the stake into the soil. Alternatively, you can hang the strips from the plant itself. 2. Peel off the clear plastic sheets on either side of the plastic strip, exposing the adhesive. 3. Place the strip into he soil at the base of the plant. 4. To dispose of used strips, wrap in newspaper and dispose in the trash.